A Danish zoo that made international headlines last month when it killed a healthy giraffe is once again in the news after it killed four lions to make way for a new male.

The lions were killed Monday, said Tobias Stenbaek Bro, a spokesman for the Copenhagen Zoo.

Two of those were young lions that were not old enough to survive by themselves and would have been killed by the new male lion if it had the chance, Bro told CNN. He said the zoo had tried to place them elsewhere, “but unfortunately there wasn’t any interest.”

The other two are the youngsters’ parents, described by the Copenhagen Zoo as a “very old” breeding pair.

The new male lion was brought from Givskud Zoo, also in Denmark, to form a breeding group with the Copenhagen Zoo’s two 18-month-old females, born on site in 2012. . .